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Sports (Basel). 2019 Jan 09;7(1). doi: 10.3390/sports7010018.

Changes in Lower Body Muscular Performance Following a Season of NCAA Division I Men's Lacrosse.

Sports (Basel, Switzerland)

Scott W Talpey, Robert Axtell, Elizabeth Gardner, Lachlan James

Affiliations

  1. Exercise and Sport Science, School of Health and Life Sciences, Federation University Australia, Ballarat Victoria 3350, Australia. [email protected].
  2. Exercise Science Department, Southern Connecticut State University, New Haven, CT 06515, USA. [email protected].
  3. Exercise Science Department, Southern Connecticut State University, New Haven, CT 06515, USA. [email protected].
  4. Orthopaedics and Rehabilitation, Yale School of Medicine, Yale University, New Haven, CT 06510, USA. [email protected].
  5. Department of Rehabilitation, Nutrition, and Sport, School of Allied Health, Latrobe University, Bundoora Victoria 3083, Australia. [email protected].

PMID: 30634468 PMCID: PMC6359267 DOI: 10.3390/sports7010018

Abstract

The tactical and technical components of training become a primary emphasis, leaving less time for targeted development of physical qualities that underpin performance during the competition phase of a training program. A deemphasis on physical preparation during the in-season training phase may make athletes more susceptible to injury and decrease performance on the field. Two weeks prior to the start and one week following the conclusion of the 16-week collegiate lacrosse season, lower body force production was assessed in eight National Collegiate Athletic Association (NCAA) Division I Men's Lacrosse athletes. Lower body force production capabilities were determined via the performance of countermovement jumps (CMJ) and drop jumps (DJ) performed on a force plate and isokinetic strength testing of the quadriceps and hamstring muscle groups across three velocities. Isokinetic strength of the hamstrings and the hamstring to quadriceps strength ratio were maintained or increased over the course of the competition phase of training. Relative peak force obtained from the CMJ and the reactive strength index from the DJ decreased significantly over the season. The maintenance of isokinetic strength and the decrease in CMJ and DJ performance may indicate the presence of neuromuscular fatigue that accumulated over the course of the season.

Keywords: isokinetic; power; reactive strength; strength

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